Means for the manufacture of optical lenses.



E." M. TAYLOR.

MEANS 0R THE MANUFACTURE OF OPTICAL LENSES. 1

AF'PLlCATION FILED MAR. 21, 1916- PatentedSept. 26,1916.

I ZSFViEETS SHEET I- MEANS FOR THE MANUFACTURE OF OFTICAL LENSES E. M. TAYLOR.

APPLICATION FILED MARZl, 1916- Patenfid Sept. .26, 1916.

2 HEETSSHEET 2.

p STATES PATENT OFFICE.

ERNEST MILES TAYLOR, OF LONDON, ENGLAND.

MEANS FOB/THE MANUFACTURE OF OPTICAL LENSES.

To all whom it may concern:

Be it known that I, ERNEST MILES TAYLOR, a subject of Great Britain and Ireland, re siding at London, in the county of London, England, have invented new and useful Improvements in Means for the Manufacture -.of Optical Lenses, of which the following is a specification.

This invention relates to. tools or appliances for the manufacture of optical lenses,

, and is particularly applicable to that kind of ens intended for spectacles and eyeglasses.

. It has for its object to provide improved means wherebya block or piece of glass, pebble or other suitable material (hereinafter referred to as lens-material) may have imparted to it a predetermined variable surface, or surfaces, of optical accuracy won one or both sides thereof.

The block or piece of lens-material herein- ;efore referred to, may be of one piece, or

that such should be considered as in any way I forming part of my invention, which, as stated above, has for its objects the provision of improved tools or appliances, whereby such results may be obtained in a more efli- 1 cient, economical, and expeditious manner. In the accompanying drawings Figures 1 and'2 show respectively in front and side elevation one arrangement f apparatus constructed according to my .invention.' Fig. 3 is top View of the device when in the position shown in- Fig. 2.

A standard ajupon a base 6 supports pivotally carriers 0 and 03 preferably of diskand rotatably disposed in the path or groove .11, of the carrier (1. Such arrangement orlike construction, as shown, which may beoscillated or rotated about their pivots in any known manner, such as by belts (see Fi 2). The arm eis attached to a block 6' which slides and is free to rotate in the path 51 groove f of the carrier 0. The upper. part of the arm e is guided in the block 9 slidably Specification of Letters Patent. Patented Sept. 26 1916 Application filed March 21, 1916. Serial No. 85,565.

device (hereinafter when referred to as a whole, called the curve-setter) carries, at the non-pivoted end of the arm 0, a bearer la upon which is mounted the tool, tool-device or tool-holder Z (hereinafter referred. to as the grinding-tool), adapted for outt1ng,rough-shaping, grinding and polishing the 'lens:ma ter 1al upon which it operates. Such grlnding-tool maybe of brass, iron,

felt, or other suitable material, circular in design, and having a suitable grindingedge.

A greater degree of rigidity will be afforded the bearer by providing duplicate curvesetters at elther end thereof.

Preferably operatingbelow such grinding-tool Z is the lens-holder m on a rotatable shaft 10 carried by the standard 0, which shaft may, ifdesired, be carried upon ant-ifriction' ball: bearings as shown.

. p is a rail, slot, or other suitable adjustable means, in or upon the bedplate g, for

supporting and permitting movement of a standard 0 and shaft n.

The modus operandi is as follows:-' The direction of the arm e being, at any moment, determined by'the position of the control-' ling slot, or slide 9 relatively to the pivot-. point e the successive positions through which the grinding-tool-face is actuated, are

determined by the direction and speed of motion or state of rest of the carrier 03 and slide 9 relatively to that of the carrier 0,.and pivot-point e' The lens-material, there fore, having been secured in position on the lens-holder m the curversetter adjusted and its movement directed to carry the grinding tool Zthrough thepath desired; the relative positions and movements of the curve setter and standard 0 being determined to insure proper contact of grinding-tool with lensmaterial; motion is then imparted by fiexible shaft, belt-drive, speed-gear, or other suitable drive, to such curve-setter-carriers,

c and d, shaft 72. and grinding-tool Z; caus ing the surface of the lens-material to gradually assume, under continued pressure, the

like curvature to the curve of the path, through which the grinding tool is actuated...

. It-will be seen that the throw of the curve" setter may first be adjusted to grind the out-- 'ermost portion of a piece of lens-materialand may then be gradually adjusted to move the grinding tool inward toward the center of the lens material. Moreover, by suitably adjusting the curve setter the grinding-tool m y e made to operate over an outer circle at one curvature and over other circles at different curvatures.

\Vhet I claim is 1. In a device for grinding lenses the combination comprising a base, pairs of carriers revolubly mounted thereon, blocks slidably disposed on said carriers, arms pivoted to one of said blocks and slide-lily guided by the (ither block of a pair of carriers, a tool bearer carried by said armsa grinding tool mounted upon said tool bearer and a Work" holder below said tool bearer.

2. In a, machine for grinding lenses, the combination comprising a base, a, Work hoider mounted thereon, carriers revolubly mounted on said base, blocks slidabiy disposed on said curriers, an arm pivotaliy mounted on one of said bio-eke and g iiideiil meome by a block upon another carrier, a tool bearer carried by Said arm, a tool revolubly mounted on sold bearer, and means for rotating In testimony whereof I have signed in name to this specification in the presence oi two subscribing" Witnesses.

ERNEST MILES TAYLOR-r. Witnesses u u M, J". IVZCDERMQTT, JAMES G. STOKES" 

